Positioning and Standardization Pathways of Polygraph Technology in Judicial Proof

Polygraph technology has been increasingly applied in the judicial field, nevertheless, its role in judicial proof remains ambiguous, necessitating the standardization of its application procedures. By analyzing the principles, methods, and practical applications of polygraph technology, this paper clarifies its auxiliary role, The current application status of lie detection technology is discussed with empirical quantitative data, such as the number of cases where lie detection was used and the outcomes of these applications., and proposes standardization pathways from aspects such as technical standardization, personnel qualification management, procedural legitimation, and result review. The aim is to enhance the scientific and rational application of polygraph technology within the judicial system, thereby supporting the pursuit of judicial justice through the integration of objective evidence.